Question

Why does the Sun appear circular at noon?

• A. The rays of light from upper edges of sun have to pass maximum thickness.
• B. The rays of the Sun have to pass through minimum thickness of air.
• C. The rays of light from the lower edges of Sun are refracted more.
• D. None of the above.

Answer 1

The correct option is B

The rays of the Sun have to pass through minimum thickness of air.

At noon, when the sun is overhead the rays have to pass through minimum thickness of air, and therefore the Sun appears circular at noon.